Adiabatic PPDF Flamelets Tutorial

In this tutorial, a hydrogen combustion case is set up using the PPDF Laminar Flamelets reaction model for unpremixed flames. The model assumes adiabatic conditions (no heat loss) and accounts for non-equilibrium and finite-rate chemistry effects.

For adiabatic PPDF, the physical properties of the fuel (hydrogen in this case) are not utilized directly by STAR-CCM+ as no additional transport equations requiring these properties are solved. Temperature, density and species mass fractions are evaluated using the function formulation (see the Adiabatic Equilibrium Model section in the User Guide).

Air enters the combustion chamber through the three air inlets and hydrogen gas enters through the fuel inlet, as indicated in the introductory Combustion Tutorials section.